Can someone please help :(

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Anyone know? will mark brainliest if correct

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show